Charcoal extractions methods present in the database
A data frame with 13 observations on the following 3 variables.
a factor with levels ACID
CPRO
GRAV
HNPK
HVLQ
IMAG
NOTK
OPPF
OTHE
POLS
SIEV
SIPO
THSL
a factor with levels Acidification of sample
using gas chromatography to measure elemental carbon (Verardo etal 1990)
charcoal part Ided as opaque phytoclasts/pyrofusinite in palynofacies
anlaysis
Charcoal part. Identified in thin slides (soil
micromorphology)
Charcoal particles identified by imaging software
Charcoal separated by heavy liquid preparation
Cumulative
probability (95% confidence interval) alluvial soil charcoal
GRAVIMETRIC chemical assay (Winkler method)
Hand picked
charcoal from soil samples
Not known
Other
Pollen
slide
Sieved
Sieved + Pollslide
a numeric vector
1 2 | data(charcoal_methods)
## maybe str(charcoal_methods) ; plot(charcoal_methods) ...
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